{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["DNA", "protein", "cell type", "RNA", "cell line"], "input": "The human T cell-specific transcription factor TCF-1 alpha plays a key role in the tissue-specific activation of the T cell receptor ( TCR ) C alpha enhancer and binds to pyrimidine -rich elements ( 5'-PyCTTTG-3' ) present in a variety of other T cell-specific control regions ."}
{"DNA": ["pyrimidine -rich elements", "T cell-specific control regions"], "protein": ["human T cell-specific transcription factor", "transcription factor", "TCF-1 alpha", "T cell receptor", "TCR"], "cell type": [], "RNA": [], "cell line": []}